What two numbers multiply to 679 and add up to 680?

Here we answer the question: "What two numbers multiply to 679 and add up to 680?"

The answer to your question is:

1 and 679

Below we illustrate and prove that 1 and 679 multiply to 679 and add up to 680:

1 × 679 = 679
1 + 679 = 680

Are you asking because you are trying to figure out how to factor the following quadratic equation?

x² + 680x + 679 = 0

If so, the solution to factor the quadratic equation above is:

(x + 1 ) (x + 679)

To summarize, since 1 and 679 multiply to 679 and add up 680, you know that the following is true:

x² + 680x + 679 = (x + 1 ) (x + 679)

Multiply To One Number and Add Up To Another
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